18. A mass attached to a spring and damper is displaced a distance xo (cm) while being given an initial velocity vo (cm/s). We know from physics and mathematics (see Chapter 8) that the displacement x as a function of time is given by x(0) = (630+)e-3-(3x0+vo) e-be The displacement is measured every 0.2 s. The measured displacement versus time is given by t(s) x (cm) 0 1.3 0.2 0.4 1.2 0.8 1 0.3 0.2 0.8 0.6 0.5 1.2 0.1 1.4 0 18. A mass attached to a spring and damper is displaced a distance xo (cm) while being given an initial velocity vo (cm/s). We know from physics and mathematics (see Chapter 8) that the displacement x as a function of time is given by x(1) = (630 + 10 )e-1-(3x0 + Vo) e-6 The displacement is measured every 0.2 s. The measured displacement versus time is given by 0.2 1.2 0.4 0.8 0.6 0.8 0.5 0.3 t(s) 0 x (cm) 1.3 Estimate the initial displacement and velocity. 1 0.2 1.2 0.1 1.4 0 nnes in chemical